I run 400 to 500psi most times........I dont wanna carry more than 75. I gonna install the 75 in the spring. That chit below tends to rise from the dead once you put some water to it anyhow.Get a Hundred gallon Ed..Filler R Up..Can do a minimum of three jobs or more on average, Myself not a 'FLOW' Tripper as some here are. To Me..the less is better..Why wake up the DEAD Chit below? I ran 250 to 300 PSI MAX!